MATERIAL: Made of sturdy iron, strong to hold up the umbrella or torch SIZE: Fits small pole of 0-0.7 inches diameter, the max clampable thickness is 1.5 inches (Please measure deck thickness and umbrella pole diameter to check if it fits before order) EASY TO SET UP: The parasol holder clip clamps and tightens easily to the railing, can quickly move it from place to place without the need for tools, the iron sheets to shape the tube can be arranged vertically or horizontally to fit your different use MAXIMIZING SPACE: The clamp-on design saves a lot of space on deck and keep the deck neat PERFECT FOR: Deck, fence, outdoor patio, balcony, porch, courtyard, holding small umbrella, torch, flag, bird feeder or outdoor decor